As far as I know you have all your facts correct. I do not think you would run into any trouble having the two experiment files in the same folder--just make sure they have different names and that they do not contain any of the same questionnaires located within that folder. Even then I do not see a big potential for conflict. If the second one does not require a responses.xls file, then even better, but if it does, then yes it will use the same file and that is ok. Just be prepared in knowing that the report file--I think--will be overwritten if you use the same subject ID for both experiments. As far as running these in a batch--try doing a search on "batch" here in the support forums--I expect you will find what you are looking for.